WebDav (httpFolder behaviour, open as WebDav-folder) does not work anymore in IE11 - what workaround?

Microsoft IE8 and IE9 used to offer functionality to start a WebDAV explorer on a Windows computer from within a WebPage:

<HTML>
<HEAD>

  <SCRIPT>
    function fnDavStart(oSpanObj, sPath) {
      oSpanObj.navigateFrame(sPath, "_blank");
   }
  </SCRIPT>
</HEAD>

<body>
<div ID=davDiv>
<SPAN ID=oWebDavHelper style="behavior:url('#default#httpFolder');" onclick = "fnDavStart this, 'https://webdav.myserver.com')">
  Click here for WebDAV folder
</SPAN>
</div>

Now the method navigateFrame() and/or the behaviour "httpFolder" seems to be gone in IE11. How to get similar functionality in IE11?

Thanks,